package com.example.day08;

/**
 * @author Lenovo
 */
public class StringBuilderDemo02 {
    public static void main(String[] args) {
        StringBuilder sb = new StringBuilder();
        sb.append("hello").append("world").append("java").append(100);
        System.out.println(sb);
        sb.reverse();
        System.out.println(sb);


    }
}
